<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Upload-test</title>
</head>
<body>
<h1>Upload-test</h1>
<form method="post" action="/upload" enctype="multipart/form-data">
    <input type="file" name="file"><br>
    <input type="submit" value="提交">
</form>
</body>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
<script>
</script>
</html>